2 * This file is part of the libsigrok project.
4 * Copyright (C) 2015-2016 Uwe Hermann <uwe@hermann-uwe.de>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
24 #define READ_TIMEOUT_MS 1000
26 static int send_cmd(const struct sr_dev_inst *sdi, const char *cmd,
27 char *replybuf, int replybufsize)
31 struct dev_context *devc;
32 struct sr_serial_dev_inst *serial;
37 /* Send the command (blocking, with timeout). */
38 if ((ret = serial_write_blocking(serial, cmd,
39 strlen(cmd), serial_timeout(serial,
40 strlen(cmd)))) < (int)strlen(cmd)) {
41 sr_err("Unable to send command.");
45 if (!devc->acquisition_running) {
46 /* Read the reply (blocking, with timeout). */
47 memset(replybuf, 0, replybufsize);
50 ret = serial_readline(serial, &bufptr, &len, READ_TIMEOUT_MS);
52 /* If we got 0 characters (possibly one \r or \n), retry once. */
55 ret = serial_readline(serial, &bufptr, &len, READ_TIMEOUT_MS);
58 if (g_str_has_prefix((const char *)&bufptr, "err ")) {
59 sr_err("Device replied with an error: '%s'.", bufptr);
67 SR_PRIV int reloadpro_set_current_limit(const struct sr_dev_inst *sdi,
74 if (current < 0 || current > 6) {
75 sr_err("The current limit must be 0-6 A (was %f A).", current);
79 /* Hardware expects current in mA, integer (0..6000). */
80 ma = (int)(current * 1000);
82 sr_err("Setting current limit to %f A (%d mA).", current, ma);
84 cmd = g_strdup_printf("set %d\n", ma);
85 if ((ret = send_cmd(sdi, cmd, (char *)&buf, sizeof(buf))) < 0) {
86 sr_err("Error sending current limit command: %d.", ret);
95 SR_PRIV int reloadpro_set_on_off(const struct sr_dev_inst *sdi, gboolean on)
101 cmd = (on) ? "on\n" : "off\n";
102 if ((ret = send_cmd(sdi, cmd, (char *)&buf, sizeof(buf))) < 0) {
103 sr_err("Error sending on/off command: %d.", ret);
110 SR_PRIV int reloadpro_get_current_limit(const struct sr_dev_inst *sdi,
115 struct dev_context *devc;
119 if ((ret = send_cmd(sdi, "set\n", (char *)&buf, sizeof(buf))) < 0) {
120 sr_err("Error sending current limit query: %d.", ret);
124 if (!devc->acquisition_running) {
125 /* Hardware sends current in mA, integer (0..6000). */
126 *current = g_ascii_strtod(buf + 4, NULL) / 1000;
132 SR_PRIV int reloadpro_get_voltage_current(const struct sr_dev_inst *sdi,
133 float *voltage, float *current)
138 struct dev_context *devc;
142 if ((ret = send_cmd(sdi, "read\n", (char *)&buf, sizeof(buf))) < 0) {
143 sr_err("Error sending voltage/current query: %d.", ret);
147 if (!devc->acquisition_running) {
148 /* Reply: "read <current> <voltage>". */
149 tokens = g_strsplit((const char *)&buf, " ", 3);
151 *voltage = g_ascii_strtod(tokens[2], NULL) / 1000;
153 *current = g_ascii_strtod(tokens[1], NULL) / 1000;
160 static int send_config_update_key(const struct sr_dev_inst *sdi,
161 uint32_t key, GVariant *var)
163 struct sr_config *cfg;
164 struct sr_datafeed_packet packet;
165 struct sr_datafeed_meta meta;
168 cfg = sr_config_new(key, var);
172 memset(&meta, 0, sizeof(meta));
174 packet.type = SR_DF_META;
175 packet.payload = &meta;
177 meta.config = g_slist_append(meta.config, cfg);
179 ret = sr_session_send(sdi, &packet);
185 static void handle_packet(const struct sr_dev_inst *sdi)
187 float voltage, current;
188 struct sr_datafeed_packet packet;
189 struct sr_datafeed_analog analog;
190 struct sr_analog_encoding encoding;
191 struct sr_analog_meaning meaning;
192 struct sr_analog_spec spec;
193 struct dev_context *devc;
199 if (g_str_has_prefix((const char *)devc->buf, "overtemp")) {
200 sr_warn("Overtemperature condition!");
201 devc->otp_active = TRUE;
202 send_config_update_key(sdi, SR_CONF_OVER_TEMPERATURE_PROTECTION_ACTIVE,
203 g_variant_new_boolean(TRUE));
207 if (g_str_has_prefix((const char *)devc->buf, "undervolt")) {
208 sr_warn("Undervoltage condition!");
209 devc->uvc_active = TRUE;
210 send_config_update_key(sdi, SR_CONF_UNDER_VOLTAGE_CONDITION_ACTIVE,
211 g_variant_new_boolean(TRUE));
215 if (g_str_has_prefix((const char *)devc->buf, "err ")) {
216 sr_err("Device replied with an error: '%s'.", devc->buf);
220 if (g_str_has_prefix((const char *)devc->buf, "set ")) {
221 tokens = g_strsplit((const char *)devc->buf, " ", 2);
222 current = g_ascii_strtod(tokens[1], NULL) / 1000;
224 send_config_update_key(sdi, SR_CONF_CURRENT_LIMIT,
225 g_variant_new_double(current));
229 if (!g_str_has_prefix((const char *)devc->buf, "read ")) {
230 sr_dbg("Unknown packet: '%s'.", devc->buf);
234 tokens = g_strsplit((const char *)devc->buf, " ", 3);
235 voltage = g_ascii_strtod(tokens[2], NULL) / 1000;
236 current = g_ascii_strtod(tokens[1], NULL) / 1000;
240 packet.type = SR_DF_FRAME_BEGIN;
241 packet.payload = NULL;
242 sr_session_send(sdi, &packet);
244 sr_analog_init(&analog, &encoding, &meaning, &spec, 4);
246 packet.type = SR_DF_ANALOG;
247 packet.payload = &analog;
248 analog.num_samples = 1;
251 l = g_slist_copy(sdi->channels);
252 l = g_slist_remove_link(l, g_slist_nth(l, 1));
253 meaning.channels = l;
254 meaning.mq = SR_MQ_VOLTAGE;
255 meaning.mqflags = SR_MQFLAG_DC;
256 meaning.unit = SR_UNIT_VOLT;
257 analog.data = &voltage;
258 sr_session_send(sdi, &packet);
262 l = g_slist_copy(sdi->channels);
263 l = g_slist_remove_link(l, g_slist_nth(l, 0));
264 meaning.channels = l;
265 meaning.mq = SR_MQ_CURRENT;
266 meaning.mqflags = SR_MQFLAG_DC;
267 meaning.unit = SR_UNIT_AMPERE;
268 analog.data = ¤t;
269 sr_session_send(sdi, &packet);
273 packet.type = SR_DF_FRAME_END;
274 packet.payload = NULL;
275 sr_session_send(sdi, &packet);
277 sr_sw_limits_update_samples_read(&devc->limits, 1);
280 static void handle_new_data(const struct sr_dev_inst *sdi)
283 struct dev_context *devc;
284 struct sr_serial_dev_inst *serial;
290 len = RELOADPRO_BUFSIZE - devc->buflen;
292 if (serial_readline(serial, &buf, &len, 250) != SR_OK) {
298 return; /* No new bytes, nothing to do. */
300 sr_err("Serial port read error: %d.", len);
306 memset(devc->buf, 0, RELOADPRO_BUFSIZE);
310 SR_PRIV int reloadpro_receive_data(int fd, int revents, void *cb_data)
312 struct sr_dev_inst *sdi;
313 struct dev_context *devc;
320 if (revents != G_IO_IN)
323 handle_new_data(sdi);
325 if (sr_sw_limits_check(&devc->limits))
326 sr_dev_acquisition_stop(sdi);